Quick Answer: High Vacuum Silicone Grease is a silicone-based grease for sealing and lubricating glass joints, stopcocks, desiccators and other vacuum apparatus. A thin layer helps make an airtight seal between glass, rubber and metal surfaces.
Last updated: October 2026
Key Features
Silicone-based grease for vacuum sealing and leak prevention
Lubricates movable glass fittings such as stopcocks and valves
Resistant to moisture and oxidation
Smooth consistency, applied by hand in a very thin, even layer
Technical Specifications
Specification
Value
Base material
Silicone-based grease
Main function
Airtight sealing and smooth lubrication
Common use
Glass joints, stopcocks, desiccators, vacuum chambers, valves and gaskets
Application
Manual
Storage
Cool, dry place away from dust and direct sunlight
About This Product
Vacuum grease is a routine consumable wherever glassware or a chamber is held at low pressure, from bell jar demonstrations in physics to vacuum filtration and desiccator work in chemistry. Surfaces are cleaned and dried first, and excess grease is avoided because it can contaminate samples or enter the apparatus.
Frequently Asked Questions
How much grease should be applied to a glass joint?
A very thin, even layer on a clean, dry surface, spread by turning the joint slightly. Excess grease can contaminate samples or get into the apparatus.
